Analog Devices Inc./Maxim Integrated

The MAX1615/MAX1616 are micropower, SOT23-5 linear regulators that supply always-on, keep-alive power to CMOS RAM and microcontrollers (µCs) in systems with high-voltage batteries. Key features include wide input voltage range, low dropout voltage, and low quiescent supply current.Despite a miserly 8µA (max) no-load supply current, the MAX1615/MAX1616 have excellent line-transient response and AC power-supply rejection ratio. They provide a clean, fixed 5V or 3.3V output (MAX1615) or an adjustable 1.24V to 28V output (MAX1616), even when subjected to fast supply-voltage changes that occur during the switchover from battery to AC adapter input power. The space-saving SOT23-5 package has excellent thermal characteristics and tolerates up to 571mW of power dissipation. Fault protection is provided by internal foldback current limiting and thermal-shutdown circuitry. The MAX1615/MAX1616 are now available in lead-free packages.ApplicationsBattery-Powered SystemsCMOS/RTC Backup PowerMicrocontroller PowerNotebook ComputersPDAs and Handy-TerminalsSmart Battery Packs/Chargers

The MAX16160 precision, four-channel supervisory circuit is designed to maintain system integrity in multi-supply systems.The device monitors its own power supply voltage in addition to three other system supply voltages and asserts the reset output whenever any supply voltage falls below its reset threshold. After all of the supply voltages rise above their reset thresholds, the reset output remains asserted for the reset timeout period, and then de-asserts.During power-up, and before all of the input voltages exceed their trip thresholds, the reset output asserts low if any of the monitored inputs is greater than 1V. The open-drain output has a weak 18μA (typ) pullup to IN2/VCC, eliminating the need for external pullup resistors.The MAX16160 offers a wide range of threshold options. Input thresholds may be fixed or adjustable. Fixed reset voltage thresholds for IN1, IN3, IN4 are available from 0.5V to 5V in approximately 20mV increments. Reset voltage thresholds for IN2/VCCare available from 1.76V to 5V in approximately 20mV increments.The MAX16160 operates over the -40°C to +125°C temperature and is available in a small, 6-bump WLP and 6-pin SOT23 package.ApplicationsData Storage EquipmentDesktop and Notebook ComputersHigh-End PrintersIndustrial EquipmentNetworking EquipmentServers/WorkstationsSet-Top BoxesTelecommunications

The MAX16161/MAX16162 are ultra-low current, single-channel supervisory ICs. The devices monitor the power supply voltage and assert a reset when the input voltage falls below the reset threshold. After the monitoring voltage rises above the factory-set threshold voltage (VTH), the reset output remains asserted for the reset timeout period and then deasserts, allowing the target microcontroller or microprocessor to leave the reset state and begin operating.Unlike conventional supervisors, which are unable to control the reset output state when VCCis very low, the MAX16161/MAX16162 reset output is guaranteed to remain asserted until after a valid VCCis achieved. This is especially important to avoid low-voltage cores leaving the reset state during power-up or power-down. This also improves performance when using the MAX16161/MAX16162 as simple power supply sequencers, because the devices will never cause a transient enable of a downstream power supply due to output glitches.The MAX16161 features a manual reset (MR) input that asserts a reset when it receives an appropriate input signal, which may be either active-low or active-high, depending on the option. The MAX16162 has no MR input. Instead, it has separate VCCand VINpins, allowing threshold voltages as low as 0.6V. The reset output is active- low open-drain, and the MAX16161/MAX16162 offer multiple available reset timeout period options.The MAX16161/MAX16162 are specified over the −40°C to +125°C temperature range and are available in tiny, 1.06mm × 0.73mm, 4-bump WLP and 4-pin SOT23 packages. The MAX16162 is also available in a 5-pin SOT23 package.Applicationse-Readers/TabletsLow-Voltage Microcontrollers and MicroprocessorsPortable/Battery-Powered EquipmentSmart PhonesWearable/Portable Accessories

The MAX16165/MAX16166 monitor up to five voltages and sequence up to four voltages. These devices provide an adjustable delay as each supply is turned on as well as monitor each power-supply voltage, including the input voltage VDD.The MAX16165/MAX16166 operate from a supply range of 2.7V to 16V and have an internal regulator output (ABP), power internal circuits, and supply more than 1mA additional current to any external circuitry.The sequencing is enabled by two inputs, ON and active-low OFF. A rising edge on the ON input initiates power-on sequencing of the channels whereas a falling edge on active-low OFF input initiates power-off sequencing. During the power-on sequencing, when all of the voltages reach their final values, a sequencing done output DONE asserts high followed by a Power-OK (POK) output after the reset delay timer has expired, allowing the microcontroller (µC) to operate. If any voltage falls below its threshold, the reset output asserts and all voltage supplies are turned off. When the sequencer initiates a power-off sequencing, the MAX16165/MAX16166 can reverse sequence the outputs.Output options available are open-drain (MAX16165) and push-pull (MAX16166). The MAX16165/MAX16166 can be daisy-chained unlimited amount to time to control any number of voltages in a system.The MAX16165/MAX16166 feature a bidirectional active-low FAULT input/output, which asserts low during any fault condition. Active-low FAULT stays low as long as an undervoltage event is present at UVSET Input and it is a one-shot output during all other active-low FAULT conditions. An external signal pulling active-low FAULT low disables all outputs immediately. The MAX16165/MAX16166 are available in a 1.63mm x 2.03mm, 20-bump Wafer-Level Package (WLP) and a 4mm x 4mm, 20L TQFN package. The device is fully specified over the -40°C to +125°C operating temperature range.ApplicationsFPGA/ASIC Power Supply SequencingIndustrial Sensors and Motor ControlsLatch-Up Prevention and Inrush Current Protection in Multi-Supply SystemsNetworking EquipmentServers and Security CamerasTest Equipment

The MAX16165/MAX16166 monitor up to five voltages and sequence up to four voltages. These devices provide an adjustable delay as each supply is turned on as well as monitor each power-supply voltage, including the input voltage VDD.The MAX16165/MAX16166 operate from a supply range of 2.7V to 16V and have an internal regulator output (ABP), power internal circuits, and supply more than 1mA additional current to any external circuitry.The sequencing is enabled by two inputs, ON and active-low OFF. A rising edge on the ON input initiates power-on sequencing of the channels whereas a falling edge on active-low OFF input initiates power-off sequencing. During the power-on sequencing, when all of the voltages reach their final values, a sequencing done output DONE asserts high followed by a Power-OK (POK) output after the reset delay timer has expired, allowing the microcontroller (µC) to operate. If any voltage falls below its threshold, the reset output asserts and all voltage supplies are turned off. When the sequencer initiates a power-off sequencing, the MAX16165/MAX16166 can reverse sequence the outputs.Output options available are open-drain (MAX16165) and push-pull (MAX16166). The MAX16165/MAX16166 can be daisy-chained unlimited amount to time to control any number of voltages in a system.The MAX16165/MAX16166 feature a bidirectional active-low FAULT input/output, which asserts low during any fault condition. Active-low FAULT stays low as long as an undervoltage event is present at UVSET Input and it is a one-shot output during all other active-low FAULT conditions. An external signal pulling active-low FAULT low disables all outputs immediately. The MAX16165/MAX16166 are available in a 1.63mm x 2.03mm, 20-bump Wafer-Level Package (WLP) and a 4mm x 4mm, 20L TQFN package. The device is fully specified over the -40°C to +125°C operating temperature range.ApplicationsFPGA/ASIC Power Supply SequencingIndustrial Sensors and Motor ControlsLatch-Up Prevention and Inrush Current Protection in Multi-Supply SystemsNetworking EquipmentServers and Security CamerasTest Equipment

The MAX16169 is an extremely low-power, pushbutton, on/off controller with a switch debouncer and built-in latch. This device accepts a noisy input from a mechanical switch and produces a clean, latched output, and a one-shot interrupt output, in response to a switch closure exceeding the debounce period at PB_IN/PB_IN. A switch closure longer than the shutdown period at PB_IN/PB_INresults in a longer one-shot interrupt output. The MAX16169 family has two sets of devices, one in which a more extended switch closure greater than the shutdown period deasserts the latched output, and another in which the latched output stays asserted.The MAX16169 operates from a supply range of +1.3V to +5.5V and consumes less than 40nA of supply current to ensure minimal battery drain in low-power applications, and to allow use as a battery "freshness seal". The robust switch input (PB_IN/PB_IN) accepts up to ±60V levels and is ±40kV ESD-protected for harsh environments. The latched output can serve as a logic signal to control a regulator or as a switch to connect the load directly to the power supply when the load current is low, providing 200mA of output current with less than 30mV voltage drop. A separateINToutput provides a system interrupt whenever a valid pushbutton signal is detected. An asynchronousCLRinput allows an external signal to force the latched output to the off state.The MAX16169 operates over the -40°C to +125°C temperature range and is available in a 2mm x 2mm 6-pin micro dual-flat no-leads (μDFN) package.APPLICATIONSPortable Medical DevicesPortable InstrumentsHandheld Consumer ElectronicsIndustrial EquipmentInternet of Things (IoT) DevicesDisposable Low-Power ElectronicsAsset Tracking Devices

The MAX1617 is a precise digital thermometer that reports the temperature of both a remote sensor and its own package. The remote sensor is a diode-connected transistor—typically a low-cost, easily mounted 2N3904 NPN type—that replaces conventional thermistors or thermocouples. Remote accuracy is ±3°C for multiple transistor manufacturers, with no calibration needed. The remote channel can also measure the die temperature of other ICs, such as microprocessors, that contain an on-chip, diode-connected transistor.The 2-wire serial interface accepts standard System Management Bus (SMBus) Write Byte, Read Byte, Send Byte, and Receive Byte commands to program the alarm thresholds and to read temperature data. The data format is 7 bits plus sign, with each bit corresponding to 1°C, in two's complement format. Measurements can be done automatically and autonomously, with the conversion rate programmed by the user or programmed to operate in a single-shot mode. The adjustable rate allows the user to control the supply-current drain.The MAX1617 is available in a small, 16-pin QSOP surface-mount package.ApplicationsCentral Office Telecom EquipmentComputers: Desktop, Workstation, ServerIndustrial ControlsLAN ServersMultichip ModulesSmart Battery Packs/ChargersTest and Measurement Equipment